In its effort to combat fraudulent medical products that claim to prevent or treat COVID-19, FDA has issued 42 warning letters, as of May 7, 2020, to companies promoting unproven products claiming to prevent, treat, diagnose, or even cure COVID-19. In one case, the company was selling fraudulent chlorine dioxide products as a treatment for the virus. The seller refused to take corrective action, causing a federal court to issue a preliminary injunction.
